The boot image profile is available only on userdebug and eng builds and
combines the boot classpath and system server classpath.
Also, update ArtManager API to use Executors instead of Handlers.
(cherry picked from commit fcbb74a429)
Test: gts GtsAndroidRuntimeManagerHostTestCases
Bug: 30934496
Merged-In: Ie501947a659d644acbde04fb46157dd0c7944e81
Change-Id: Ie501947a659d644acbde04fb46157dd0c7944e81